Transport error - HTTP code: 0 (Chrome) but transport OK

[mgillen]

Version: SmartClient Version: v9.0p_2014-01-29/Pro Deployment (built 2014-01-29)
Chrome version: 47.0.2526.111

I have found other forum requests about this but I don't think they describe the same problem.

The situation is that a SmartGWT application is running in a frameset within one browser tab. This application makes two IDAcalls to the server in a loop. The first call is handled quickly and the second call takes around 5 seconds.

In another frame within the same tab, there is a XMLHttpRequest being issued from a setInterval every 60 seconds to the same server.

In another browser tab there is a window.location.reload() call after a setTimeout periodically.

The problem is that my SmartGWT application will run happily for a while making the same pair of requests and then all of a sudden I will get a transport error from the IDAcall URL.

The other setInterval running in the same frame set is also affected, this also stops working.

But the window.location.reload() call keeps on working in the other browser tab.

If I open a new tab and access some URLs on the same server this also is successful and reloading the tab containing the SmartGWT application is also successful.

So I don't think it's a transport error.

But I'm also not convince it's a SmartGWT/SmartClient issue because the other regular XMLHttpRequest stops working also.

Seems to happen in IE as well.

Any pointers ?

[Isomorphic]

Browsers will return this error in a few circumstances:

1. a reload happens in the middle of a request being sent (probably your issue)

2. the host is totally unreachable at an IP level (malformed URL, DNS lookup failure, no route to host, etc)

3. cross-site or cross-domain call attempted and not allowed

[gillenm]

Thank you for the pointers.